4
Basic Mode of Operation
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This power supply is designed to operate as a constant voltage source or as a
constant current source. Automatic crossover to either mode of operation occurs
when the load condition changes as following :
Constant Voltage (CV), Automatic crossover & Constant Current (CC)
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The power supply functions as a constant voltage source (CV) as long as the
load current is less than the preset current limiting value. When the load current
is equal to or greater than the preset current limiting value, the power supply will
automatically cross over to the constant current mode, voltage will drop, (CC) will
show on the LCD display panel and it will operate as a constant current source.
When the load current drops below the preset current limiting value, the supply
returns to constant voltage (CV) mode.
Set the Output Voltage and Presetting Current Limiting Value (CC)
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Push the control one time to check the preset voltage and current level. Push the
control again until the decimal place which you want to adjust. The selected decimal
place will flash. Turn the control to adjust your desired value.
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To check the preset voltage and current level, just turn the controls lightly in any
direction or just push the controls one time.
Tracking Output Over Voltage Protection (OVP)
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This is to protect the connected load in the event that the output voltage control
circuit malfunctions, the maximum output voltage will not exceed 30% of the
adjusted voltage value at the time of the operation.
Over Temperature Protection
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When the temperature inside the power supply becomes higher than a pre-
determined value, the output voltage and current of the power supply will
automatically decrease to zero to prevent damage to power supply. When the
temperature inside the power supply returns to about 65°C then the power supply
will automatically return to operation again.
